Gang,
Lets clear a few things up here.
First, there are no default retreats. I occasionally retreat a single unit with one option in order to keep the game rolling (which I will likely reconsider doing in the future), but I am clear at the start of the game, as are the DC house rules, that unordered retreats go away. An easy solution: Send your orders, don't assume.
Second, there is no excuse for any player to order without being aware of the game rules, or the "house rules" for any particular game. It's not a crime, but don't expect any sympathy. I will answer any rule question at any time, or direct you to an explanation. I am not responsible for checking with anyone to make sure they know the rules as they play. There are MANY sources to find diplomacy rules online, including our own DC site.
Lastly, some of you are asking for my intervention, or for judgement calls in this. Forget it. This is your game, not mine. I will play referee, adjudicate, and try to keep things rolling. That's it. I will oversee votes for some things if I think they are reasonable requests. It doesn't affect me at all, so why not?
I think that's it. Play on please.
Warren